1. Check the market data. Find out the total sales and total revenue in the category. Unfortunately, Amazon doesn't share thistle of data, so you might want to consider using special sales analytics tools.
2. Check your competitors' data. Determine the sales numbers and revenue for each competing brand.
3. Calculate the market share. Apply the following formulas:
- Market Share Revenue = (company revenue/total revenue) x 100
- Market Share Sales = (company sales/total sales) x 100